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[lvgl] Clamp values for meter line indicators (#16180)

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This commit is contained in:
Clyde Stubbs
2026-05-01 12:23:14 +10:00
committed by Jesse Hills
parent 60a94fd109
commit d9c22d6b56
2 changed files with 5 additions and 3 deletions
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esphome/components/lvgl/lvgl_esphome.cpp
+4 -2
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@@ -454,10 +454,12 @@ void LVTouchListener::update(const touchscreen::TouchPoints_t &tpoints) {
#ifdef USE_LVGL_METER
int16_t lv_get_needle_angle_for_value(lv_obj_t *obj, int value) {
int16_t lv_get_needle_angle_for_value(lv_obj_t *obj, int32_t value) {
auto *scale = lv_obj_get_parent(obj);
auto min_value = lv_scale_get_range_min_value(scale);
return ((value - min_value) * lv_scale_get_angle_range(scale) / (lv_scale_get_range_max_value(scale) - min_value) +
auto max_value = lv_scale_get_range_max_value(scale);
value = clamp(value, min_value, max_value);
return ((value - min_value) * lv_scale_get_angle_range(scale) / (max_value - min_value) +
lv_scale_get_rotation((scale))) %
360;
}
esphome/components/lvgl/lvgl_esphome.h
+1 -1
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@@ -112,7 +112,7 @@ inline void lv_animimg_set_src(lv_obj_t *img, std::vector<image::Image *> images
#endif // USE_LVGL_ANIMIMG
#ifdef USE_LVGL_METER
int16_t lv_get_needle_angle_for_value(lv_obj_t *obj, int value);
int16_t lv_get_needle_angle_for_value(lv_obj_t *obj, int32_t value);
#endif
// Parent class for things that wrap an LVGL object